<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8"/>
    <title>Title</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>


<div id="app">
    {{ message }}
</div>
<div id="app-2">
        <span v-bind:title="message">
           鼠标悬浮几秒查看此处提示内容
            <br/>
            {{message}}
        </span>
</div>
<script>
    var app = new Vue({
        el: '#app',
        data: {
            message: 'Hello vue'
        }
    });

    var app2 = new Vue({
        el: '#app-2',
        data: {
            message: '页面加载:' + new Date().toLocaleDateString()
        }
    });

</script>
</body>
</html>